Home / 14,148.65-21,223.07-4,287.90

Finding the Fourth Proportional to 14,148.65, 21,223.07 and 4,287.90

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Solution

The fourth proportional to 14,148.65, 21,223.07 and 4,287.90 is: 6,431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,148.65 : 21,223.07 = 4,287.90 : x
  2. Step 2: Convert to fraction form
    14,148.65/21,223.07 = 4,287.90/x
  3. Step 3: Cross multiply
    14,148.65x = 21,223.07 × 4,287.90
  4. Step 4: Simplify right side
    14,148.65x = 91,002,380.41
  5. Step 5: Solve for x
    x = 91,002,380.41/14,148.65
  6. Step 6: Final answer
    x = 6,431.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.